20680099181 has 8 divisors (see below), whose sum is σ = 24661981824. Its totient is φ = 16955112240.

The previous prime is 20680099169. The next prime is 20680099207. The reversal of 20680099181 is 18199008602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20680099181 - 2¹⁸ = 20679837037 is a prime.

It is a super-2 number, since 2×20680099181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20680099481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64223750 + ... + 64224071.

It is an arithmetic number, because the mean of its divisors is an integer number (3082747728).

Almost surely, 2^20680099181 is an apocalyptic number.

It is an amenable number.

20680099181 is a deficient number, since it is larger than the sum of its proper divisors (3981882643).

20680099181 is a wasteful number, since it uses less digits than its factorization.

20680099181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128447851.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 20680099181 in words is "twenty billion, six hundred eighty million, ninety-nine thousand, one hundred eighty-one".